Considering how much of a boost to daemon ships are getting by not being shot at before acting, I think those point costs are warranted. 25pts to drop a slaughter into enemy lines with no ramifications is totally worth it. The 2+ is a possible downside, but a not so common one. Not getting to fire for the first turn or two is crappy, but its still totally protected too. It will be able to pop in right at an enemy weak spot. I'm still willing to be persuaded, but I don't see 25, 30, 35, 50 being all that steep